Keeping Your Markup Slim Using CSS Selectors
Richard Clark, Oli Studholme, Christopher J. Murphy, Divya Manian · Apress eBooks · 2012
In order to style an element with CSS, we need to be able to target it. Enter CSS selectors, which allow us to target specific elements in the DOM. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.